Planetary hours
in Belfast.
The day, from sunrise to sunset, is cut into twelve equal hours; so is the night, from sunset to the next sunrise. Each hour carries a planet, in the Chaldean order. A planetary hour therefore lasts 60 minutes only at the equinoxes: it all depends on the date and the city. Here are the exact hours for your city; what you do with them is up to you.
Planetary day of Wednesday, 12 August 2026: day of Mercury
- Sunrise
- 05:54
- Sunset
- 21:02
- Next sunrise
- 05:55
A day hour lasts 1h 16m; a night hour, 44 min. Local time (Europe/London).
Day
- 1☿︎ Mercury05:54 – 07:09
- 2☽︎ Moon07:09 – 08:25
- 3♄︎ Saturn08:25 – 09:41
- 4♃︎ Jupiter09:41 – 10:56
- 5♂︎ Mars10:56 – 12:12
- 6☉︎ Sun12:12 – 13:28
- 7♀︎ Venus13:28 – 14:43
- 8☿︎ Mercury14:43 – 15:59
- 9☽︎ Moon15:59 – 17:15
- 10♄︎ Saturn17:15 – 18:30
- 11♃︎ Jupiter18:30 – 19:46
- 12♂︎ Mars19:46 – 21:02
Night
- 1☉︎ Sun21:02 – 21:46
- 2♀︎ Venus21:46 – 22:31
- 3☿︎ Mercury22:31 – 23:15
- 4☽︎ Moon23:15 – 00:00
- 5♄︎ Saturn00:00 – 00:44
- 6♃︎ Jupiter00:44 – 01:29
- 7♂︎ Mars01:29 – 02:13
- 8☉︎ Sun02:13 – 02:57
- 9♀︎ Venus02:57 – 03:42
- 10☿︎ Mercury03:42 – 04:26
- 11☽︎ Moon04:26 – 05:11
- 12♄︎ Saturn05:11 – 05:55
Other cities · United Kingdom
Questions
How are the planetary hours calculated in Belfast?
On Wednesday, 12 August 2026, the Sun rises at 05:54 and sets at 21:02: the day lasts 15h 08m, that is twelve day hours of 1h 16m. The night, until the next sunrise at 05:55, lasts 8h 54m: twelve night hours of 44 min.
Which planet rules the first hour that day?
Mercury, from 05:54 to 07:09: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: the Moon, Saturn, Jupiter, Mars, the Sun, Venus, then Mercury again.
Today’s sky, on YOUR chart
Planetary hours are the same for everyone in a city. Your chart is yours alone: every morning AstroXP crosses the real sky with your birth, to the minute, and tells you what time it plays out for you.
On a computer? Scan this code with your phone.
Calendars
Sunrise and sunset calculated for the city (the Sun’s centre 0°50′ below the horizon: refraction and semi-diameter), local time of the city’s time zone. Checked against astronomy-engine, the app’s engine.